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path: root/drivers/net/ethernet/netronome/nfp/crypto
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* nfp: tls: don't leave key material in freed FW cmsg skbsJakub Kicinski2019-07-091-1/+15
| | | | | | | | | Make sure the contents of the skb which carried key material to the FW is cleared. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/tls: don't clear TX resync flag on errorDirk van der Merwe2019-07-091-4/+9
| | | | | | | | | | | | | | | Introduce a return code for the tls_dev_resync callback. When the driver TX resync fails, kernel can retry the resync again until it succeeds. This prevents drivers from attempting to offload TLS packets if the connection is known to be out of sync. We don't worry about the RX resync since they will be retried naturally as more encrypted records get received. Signed-off-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com> Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* nfp: tls: use unique connection ids instead of 4-tuple for TXJakub Kicinski2019-07-092-14/+31
| | | | | | | | | | | | | | | | Connection 4 tuple reuse is slightly problematic - TLS socket and context do not get destroyed until all the associated skbs left the system and all references are released. This leads to stale connection entry in the device preventing addition of new one if the 4 tuple is reused quickly enough. Instead of using read 4 tuple as the key use a unique ID. Set the protocol to TCP and port to 0 to ensure no collisions with real connections. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* nfp: tls: move setting ipver_vlan to a helperJakub Kicinski2019-07-091-6/+10
| | | | | | | | Long lines are ugly. No functional changes. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* nfp: tls: ignore queue limits for delete commandsJakub Kicinski2019-07-091-2/+3
| | | | | | | | | | We need to do our best not to drop delete commands, otherwise we will have stale entries in the connection table. Ignore the control message queue limits for delete commands. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* nfp: tls: fix error return code in nfp_net_tls_add()Wei Yongjun2019-07-091-0/+1
| | | | | | | | | | Fix to return negative error code -EINVAL from the error handling case instead of 0, as done elsewhere in this function. Fixes: 1f35a56cf586 ("nfp: tls: add/delete TLS TX connections") Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* nfp: tls: make use of kernel-driven TX resyncJakub Kicinski2019-06-112-9/+13
| | | | | | | | | | | | | | When TCP stream gets out of sync (driver stops receiving skbs with expected TCP sequence numbers) request a TX resync from the kernel. We try to distinguish retransmissions from missed transmissions by comparing the sequence number to expected - if it's further than the expected one - we probably missed packets. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/tls: generalize the resync callbackJakub Kicinski2019-06-111-3/+6
| | | | | | | | | | | Currently only RX direction is ever resynced, however, TX may also get out of sequence if packets get dropped on the way to the driver. Rename the resync callback and add a direction parameter. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* nfp: tls: enable TLS RX offloadJakub Kicinski2019-06-112-6/+24
| | | | | | | | | Set ethtool TLS RX feature based on NIC capabilities, and enable TLS RX when connections are added for decryption. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* nfp: tls: implement RX TLS resyncDirk van der Merwe2019-06-111-0/+32
| | | | | | | | | Enable kernel-controlled RX resync and propagate TLS connection RX resync from kernel TLS to firmware. Signed-off-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com> Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* nfp: rename nfp_ccm_mbox_alloc()Jakub Kicinski2019-06-111-4/+4
| | | | | | | | | We need the name nfp_ccm_mbox_alloc() for allocating the mailbox communication channel itself. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* nfp: tls: add basic statisticsJakub Kicinski2019-06-061-1/+5
| | | | | | | | | | | Count TX TLS packets: successes, out of order, and dropped due to missing record info. Make sure the RX and TX completion statistics don't share cache lines with TX ones as much as possible. With TLS stats they are no longer reasonably aligned. Signed-off-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com> Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* nfp: tls: add/delete TLS TX connectionsDirk van der Merwe2019-06-061-1/+299
| | | | | | | | | | | | This patch adds the functionality to add and delete TLS connections on the NFP, received from the kernel TLS callbacks. Make use of the common control message (CCM) infrastructure to propagate the kernel state to firmware. Signed-off-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com> Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* nfp: tls: add datapath support for TLS TXDirk van der Merwe2019-06-061-0/+7
| | | | | | | | | | | | Prepend connection handle to each transmitted TLS packet. For each connection, the driver tracks the next sequence number expected. If an out of order packet is observed, the driver calls into the TLS kernel code to reencrypt that particular skb. Signed-off-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com> Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* nfp: add tls init codeJakub Kicinski2019-06-063-0/+225
Add FW ABI defines and code for basic init of TLS offload. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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